Regiospecific Syntheses of 3-Aza-α-carbolines via Inverse Electron-Demand Diels-Alder Reactions of 2-Aminoindoles with 1,3,5-Triazines
作者:Qun Dang、Xu Bai、Guoxing Xu、Lianyou Zheng、Shixue Wang
DOI:10.1055/s-0029-1218345
日期:2009.12
scope of 1,3,5-triazine inverse electron-demand Diels-Alder (IDA) reactions was expanded to include 2-aminoindoles as productive dienophiles leading to various 3-aza-α-carbolines in excellent yields. Furthermore, the two ester groups of the IDA product were differentiated via reduction of the C4-ester to its corresponding alcohol. This new IDA reaction could be potentially applied to the synthesis of
Synthesis and antimicrobial activity of 2-amino-2-arylazoindole hydrochlorides
作者:Yu. N. Portnov、V. G. Zabrodnyaya、S. N. Bulaga、L. N. Filitis、O. Yu. Amel'kin、V. A. Silin、O. V. Baklanova、E. N. Padeiskaya
DOI:10.1007/bf00768381
日期:1990.11
aryldiazonium salts. Electrophiiic substitutionreactions among the 2-aminoindoles (bromination, nitration, and sulfonation) yield substitution products in position 3 [3]. Substitution occurs at position 5 of the benzene ring only in strongly acid media where 2aminoindole exists in the iminoindole tautomer form [3]. Under the reaction conditions we selected (acetate buffer solution pH 5.0), the reaction between
FeCl3-catalyzed sequential cyclization for the construction of 12-aryl 5,7-dihydropyrido[2,3-b:6,5-b']diindoles
作者:Xiaoqian Chen、Lin Li、Changfeng Wan、Jin-Biao Liu
DOI:10.1016/j.tetlet.2020.152334
日期:2020.9
A facile approach to prepare 12-aryl 5,7-dihydropyrido[2,3-b:6,5-b']diindoles via tandem cyclizations is described. FeCl3 is used as the catalyst for the reaction between o-aminophenylacetonitriles and aromatic aldehydes, generating 5,7-dihydropyrido[2,3-b:6,5-b']diindoles derivatives in moderate to high yields. (C) 2020 Elsevier Ltd. All rights reserved.
Synthesis of novel galeterone derivatives and evaluation of their in vitro activity against prostate cancer cell lines
Prostate cancer is one of the main causes of male cancer-related deaths worldwide and the suppression of androgen receptor signalling is established as an effective strategy for the treatment. A series of galeterone analogues including several steroid-fused azacycles, as well as 17-(benzimidazol-1-ylimino), 16 alpha-(benzimidazol-2-ylamino), and 16 alpha-(benzothiazol-2-ylamino) steroid derivatives, were synthesized and tested against prostate cancer cell lines. Candidate compound 3f was shown to reduce AR-regulated transcription in a dose-dependent manner in nanomolar ranges and suppress expression of AR-regulated proteins Nkx3.1 and PSA in 22Rv1-ARE14 and VCaP cancer cell lines. Flexible docking study revealed similar position of 3f within AR binding site in comparison of galeterone even with stronger binding energy. (C) 2019 Elsevier Masson SAS. All rights reserved.